---
tag: 0HNK6KT05K
kind: concept
name: Centre of mass
aliases: [center-of-mass, centroid]
msc: [26B15]
uses: [0698M7C7AX, 0XPR1E85W0]
sources:
  - url: https://en.wikipedia.org/wiki/Center_of_mass
    locator: Definition
same_as:
  wikidata: Q2945123
  wikipedia: Center of mass
---

## Summary

The centre of mass of a body is the average position of its mass, with each point weighted by the density there.
For a body with a continuous density it is a quotient of [[triple integrals|0698M7C7AX]], or of double integrals for a plane lamina.